Draft adjustment.



P. EWALD.

DRAFT ADJUSTMENT.

APPLICATION FILED JULY 16. 1914.

Patented Jan. 11, 1916.

3 SHEETSSHEET 1.

.mz Kid} COLUMBIA PLANoown camammmzmu, D. c.

P. EWALD. DRAFT ADJUSTMENT.

APPLICATION FILED JULY 16, \9l4- Patented Jan. 11, 1916.

3 SHEETS-SHEET 2 MMM;

P. EWALU.

DRAFT ADJUSTMENT.

APPLICATION FILED JULY 16, l9l4.

1.161684, Patented Jan. 11, 1916.

3 SHEETS-SHEET 3.

glvvuewtm/ 1 I VHF 1 1 0056-.)

CDLUMBIA PLANOGRM'H co, WASHINGTON. U c.

nairnn snares rarnrrr oration.

PAUL nwann, on CLINTONVILLE, WISCONSIN.

DRAFT ADJUSTMENT.

. Specification of Letters Patent.

Patented Jan. 11, rare.

Griginal application filed August 10, 1911, Serial No. 643,280%. Divided and this application filed July 16, e 1914. Serial No. 851,344.

To ail whom it may concern: 7 i Be it known that I, PAUL EWALD, a citizen of the United States, residing at Clintonville, in the county of VVaupaca and State of Wisconsin, have invented certain new and useful Improvements in Draft Adjustment, of which the following is a specification.

This invention relates to an improved draft adjustment for sulky plows and more particularly to a plow of the type which is especially adapted to be used at different angles, that is in plowing rough and uneven ground and this application is a division of the applicants former application filed August 10th, 1911, Serial No. 6413,2809}.

An object of this inventionis to provide a means for adjusting the draft members of the vehicle to conform with the adjustment of the body portion thereof, consequently obviating the unusual position of the tongue when the vehicle is in an adjusted position.

VVith the above and other objects in view, this invention resides in the novel features of construction, formations, combinations and arrangements of p'artsto be hereinafter more fullydescribed and illustrated in the accompanymg drawings, in which 2+ Figure 1, is a side elevation of my draft adjustment applied to a sulky plow, Fig. 2, is a top plan view of the same, Fig. 3, is a detail view of the draft operating mechanism, and Fig. 4, is a longitudinal sectional view taken on line 4l-4 of Fig. 2.

Referring tothe accompanying drawings by similar characters of reference, the nu- ,meral 1 designates the body portion or supporting structure of a sulky plow, which as shown in the drawings, is substantially U- shaped. A portion of this frame, is bent to form parallel extensions 2, which extensions provide an auxiliary supporting device for my draft operating mechanism above-mentioned. For the purpose hereinafter set forth, the rear extremity of one of the ends of the body portion is bent at right angles thereto as shown at 3,and again at 4:, to form a circular supporting device, the end of which is secured to the b'odyportionby such means as shownat 5. As is readily obvious by reference to the'drawings, I have mounted upon this last mentioned supporting structure, the lower extremity of a leaf spring 6, the upper extremity of which carries the ordinary operators seat 7.

Revolubly supported upon the body pore tion 1, through the medium of a bearing 8, is an axle 9, the latter being journaled through an extension 10 carried upon an ordinary segmental rack 11, the latter being fastened upon the supporting structure 3, as shown at 12. Further the end of the axle 9 is bent as shown at 12 to form a crank 13. The latter serves as a suitable supporting-stud which is received 'by the hub 14: of the wheel 15. For the purpose of preventing the wheel from running off of the stud,

and consequently injuring the operating parts of the device, I have provided a bearing 16, which is secured together as shown at 17. i

It is 'now readily apparent that the movement of the axle will adjust the wheel or :rather the body portion of the device to different angular positions. Thatis, when most position while the center of the other wheel is above the center position, consequently allowing the device to run upon the regular ground without moving the blade of the plow from its usual substantially vertical position. .With this in view, I have provided upon the axle 9 a pivot lever 19, the latter having a handle 20 pivoted thereon as shown at 21, for operating a vertically extendingrod 22, carrying a pawl 23. The pawl 23, is clearly shown in engagement with the teeth upon the rack 11, consequently holding the body portion at certain times in rigid relation with the axle and its attachment.

For the purpose of elevating and depressing the stud or crank 13, I have pivoted upon the lever 19, an arm 24 as shown at 25, the latter being also connected to the stud as shown at 26. Upon reference to Fig. 4: of the drawings, it will be recognized that the stud is in its lowermost position in relation to the body portion, however, if the lever 19 is moved to a vertical position, it will be recognized that the stud will be raised, consequently lowering the body portion in relation to the wheel.

For the purpose of more readily assuring Yes the eiiicient operation of the crank, I have provided upon the axle 9, a coil spring 2?, one end of which is fast upon the bearing 8, the other end being Connected to an adjustable collar 28 as is clearly shown. Further, I have provided a second substantially U- shaped bracket 29, the ends of which are secured .to the first mentioned bracket as shown at 30 and 31. It will be recognized, that the bracket 29 connects the ends of the supporting bracket, consequently greatly re inforcing the same, and assuring the durability of the device.

Pivoted upon the body portion 1, as shown at 32, is a substantial bell crank lever 33, one end of the latter being bent at right angles as shown at 34 to form a supporting member 35. This supporting member 35, provides the main supporting structure for the second axle supporting the other wheel. With this in view, I have provided upon the member 35, a depending bracket 36, the latter having connection therewith, through the medium of a pair of spaced apart sleeves .37. The bracket 36 supports, as is clearly shown an axle 38. the latter being received into the hub 39 of the wheel 40. Here a bearing 41 is provided. which is similar in construction to the bearing 16, being secured together as shown at 18.

For normally holding the bracket 36 in a certain position. I have provided thereon a hook 42, which has in engagement therewith one end of a coil spring 43, the other end of the latter being secured to a hook 44. carried upon the member 29. as shown zit-45.

' A second bell crank lever 46 is provided and pivoted upon the body portion 1, as shown at 47, one of its ends carrying a seg mental rack 48, which is fast upon the supporting member 35. A lever 49 is loosely mounted upon the supporting member and has pivotally mounted thereon as shown at 50 a handle 51. the latter having connection with a depending rod 52, which carries a pawl for engagement with the segmental rack 48. Further, this lever is provided with a quadrantal shaped arm 54, the latter being secured thereto as shown at 55, its other end having enga gcment with the axle 38..as shown at 56; By this arrangement, it will be reco nized that as the lever 49 is rocked to different positions. the body portion of the device will be raised and lowered in relation to the wheel 40, thereby serving the purpose hereinbefore set forth. 7 From the foregoing. it will now be appreciated that the operator, when at his post of duty, upon the device. can easily manipulate the levers 49 and 19 to raise and lower the body portion at opposite sides. thereby providing means. as above described for holding the plow in its usual substantially vertical position when the device is travelmg over rregular ground. v

A plow beam 57, is provided, the forward end of which, is secured to a substantiallv U-shapecl bra'cket'5-9, carried upon the frame work 1, its rear end carrying a plow blade 60. Means have been provided for connection with the plow beam, intermediate its ends, whereby it may be raised and lowered according to theswill of: the-operator. With this in view, I have provided upon the supporting member 35, a bracket 61, over which extends the plow beam, a member 62 being provided upon the bracket for engagement with the plow .beam and such means as shown at 63. For the purpose of holding the bracket 61 indi'iferent positions. I have provided upon the supporting member 35, a bearing 64, the construction of which, is readily apparent. V v

The forward extremities of the substantially bell crank levers 33 andf46 respectively, halve pivotal connection as shown at 65, with pairs of normally downwardly projecting arms 66 and 67. Further bearings 68 are provided upon the framework of the device over which'is journaled a bar 69, one end of the latter being bent as shown at 70 to form a downwardly projectingfinger for pivotal engagement with the arm 67 as shown at 71.

An adiustabledepending lug 72 is provided. upon the bar .69, which has pivotal engagement with the. arm 66 as shown at 7 3. whereby, when the bar 69 is rotated, the bell crank levers will be rocked simultaneously. For the purpose ofholding the bar 69 in normal position, a coil spring 74 is provided thereon, onetend of which is secured to one of the bearings 68, while its other end is made fast to an adiustable collar 75. on the bar, the collar being held in a normally locked position, in relation thereto,

through the medium of a set screw 76,

Upon referencejto thedrawings, it will be recognized that the bar 69, proiects bevond one side of thesupporting frame 1. Upon this projecting end, is provided an angu larlVIbcnt lever 77, the latter having engagement with the bar 69 atan intermediate portion, and being held in rigid relation therewith through the medium of a bearing 78 Provided near the extremities of; this lever are singularly projecting foot engaging members 79 and .80, the latter serving as: a

means whereby the operator may nianipulate the lever in. an efiijcient manner.

. It will now be recognized that when the lever is in the position shown in Fig. 4 of the accompanyingdrawings, the plow blade is held out of contact. with the ground, as the supporting member 35 is in its uppermost position in relation to thebody portion. However, it will be, recognized that if the lever 77 is operated in such a" manner as to rock the; bell crank levers 3,3 and 46 respew iavely, the plow may .belowered in relation upon the lever 77 a pivot foot pedal 85, the

latter being secured thereto as shown at- 86 and carrying a depending lug 87 for engagement with a downwardly projectingrod 88. Slidably mounted upon the lever 77 through the medium of a bearing 89 is a pawl 90,

the latter being held normally in a downward position through the medium of a coil spring 91. The pawl has engagement with the catch 81 by such means as shown at 92 whereby depressed, the catch will be drawn out of engagement with the step 84. The

operation of this part of the device is as follows :-'1he device is in its normal position as shown by Fig. 1 of the accompanying drawings, the plow blade 60 being out of engagement with the ground. If it is desired to lower the blade however, the op erator, by useof his foot, manipulates the foot pedal 85, consequently drawing the catch 81 out of engagement with the step 81. When this operation occurs, the upper end of the lever 77 is moved downwardly, consequently manipulating the bell crank levers 33 and 46 respectively, so that the supporting member 35 is lowered, consequently lowering the plow beam and blade. While this operation does not materially alfect the raising and lowering of the body portion, the body is slightly raised when the parts are in this position.

As set forth above, I have provided in connection with the plow an efiicient means for operating my draft attachment applied to the device to conform with the adjustment of the body portion in relation to the wheel. It will be readily seen that when one side of the body portion is materially higher than the other, the tongue of the vehicle would naturally be higher upon one horse than the other. To obviate this diiiiculty, and to provide a means for adjusting the tongue, so that it is in relatively the same position to each horse, I have provided the following mechanism: Having one end secured to the extension of the body portion as shown at 93 is a transversely projecting bar 94:, the latter being bent as shown at 95 to provide a supporting means for a segmental rack 96, the latter being secured thereto as shown at 97. Further, the end of the bar 94: is bent at right angles to the portion 95 and secured to the frame 1 as shown at 98 and continued on to form the step 84. A pair of tongue sup-- porting members 99 and 100 are provided upon the extension 2 and secured thereto as shown at 101. The upper ends of thesupporting members 99 and 100 are spaced apart from each other and have journaled transversely therethrough a pin 102. The pin 102 as is shown pivotallysupports a tongue 103 as is obvious, and is of the ordinary form. i For purpose of connection with one end of a substantially bell crank lever 104: pivoted upon the extension 2 as shown at 105, I have provided the tongue 103 with a slidably projecting finger 106', the latter having connection with the tongue 103 as is shown at 107, and to the bell crank lever as shown at 108. The other end of the bell crank lever has pivoted thereto as shown at 109, an arm 110. For the purpose of operating the arm 110, and consequently. moving the tongue laterally, I have pivoted upon the said segment 96, as shown at 111 an operat ing lever 112, the latter having a handle 113, pivoted thereon for engagement with a downwardly projecting rod 11 1, the latter having connection. with a pawl 115, which is slidably mounted in a bracket 116, as is clearly shown. For the purpose of normally holding the pawl 115 in engagement with the teeth of the segment 96, I have provided a coil spring 117, which has one end secured to the bracket 116, while its opposite end is secured to the pawl 115 as shown at 118. The arm 110 having connection with the operating lever, assures the positive operation of the tongue during the movement of the lever 112, consequently greatly adding to the efiiciency of the device.

Provided uponfthe extension 2 and sup ported by a lug 119, is a curved arm 120, the latter being engaged within a recess formed in the end of the tongue 103 and whereby the latter is guided in its transverse movement upon the device.

The greatest of stress should be laid upon the simplicity and efficiency of the draft adjusting mechanism inasmuch as it is to be particularly used in connection with a plow of this type, thereby more readily assuring the positive operation of the latter.

Such changes as are permissible by the subjoined claims may be resorted to, if occasion requires, without departing from the spirit and scope of my invention.

Having thus fully described my invention, what I claim as new and desire to protect by Letters Patent is 1. In a device of the character described, a body portion having an extension formed thereon, a plurality of wheels supporting the said body portion, a plurality of supporting members provided upon the said extension, a tongue pivotally mounted therebetween and having a recess formed therein at the inner end thereof, a curved arm secured to the said extension for engagement with the said recess as a guide means for the said tongue, and an operating lever and cooperating members as a means foroscillating the said tongue. V y

'2. In a device of thecharacter described, a body portion having an extension formed thereon, a plurality of Wheelssupporting said body portion, a plurality of supporting said body portion With the extension, a segmental rack secured to said transverse bar, an operating lever pivotally mounted upon said; segmental rack and engaging the other end of said arm as a means for'oscillating the said tongue, a handlepivotally mounted upon said operating lever, a rod connected thereto and-a pawl carried by said rod for engagement ith said segmental rack for the purpose of substantially holding the said tongueagainst movement. V

ln-testimony whereof I affix my signature in presence of two Witnesses.

PAUL EVVALD. l/Vitnesses i r R. G. Greson, T. E. RUTH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

